Qualor II

From Memory Alpha, the free Star Trek reference

Qualor II is a Federation planet located in Sector 213. The Zakdorn-operated Surplus Depot Z15 is located in orbit of Qualor II.

In 2368, the USS Enterprise-D arrived at Qualor II to investigate the fate of the Vulcan transport T'Pau, which had been sent to the depot but whose deflector array had somehow been found amongst the debris of a Ferengi cargo shuttle. It was discovered that arms smugglers had been stealing components from the depot by masquerading as the USS Tripoli, and that the Romulans had contracted them to steal the T'Pau as part of a plot to invade Vulcan. (TNG: "Unification I", "Unification II")